Today we have updated a portion of our Refund Policy regarding pre-purchased titles. This change covers titles that are in pre-purchase and offer “Advanced Access”. Playtime acquired during the Advanced Access period will now count towards the Steam refund period. You can find our more information r...
I find it surprising that existed. Not an unreasonable change.
For the lazy, when a game sold "advanced access" as part of a pre-purchase; game time before release didn't count to the 2h refund limit. So you could play eg 10h of a game, then refund it on release. This is them fixing it.
Also has a con, "advanced access" is just another dogshit way for publishers to farm money from people with their "deluxe" editions. By having people be able to refund could discourage this practice.